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Tucson Woman Arrested in 1975 Step‑father Homicide After DNA Genealogy Breakthrough

Forensic genetic genealogy identified the long‑unidentified remains and prompted a grand jury indictment that led to the suspect's arrest.

Overview

  • Authorities arrested 79‑year‑old Carol Ann Beall after a Pima County grand jury indicted her and booked her on May 28 with a $500,000 bond and an arraignment scheduled for June 4.
  • The remains were first found at a Pima County landfill in October 1975 and stayed unidentified for decades until a 2025 partnership with forensic genealogy firms produced a DNA match that traced investigators to the victim’s granddaughter.
  • Prosecutors say the victim is William Reginald Sipfle and allege the killing occurred between October 9 and October 15, 1975, while also alleging Beall lived in Sipfle’s home and collected roughly $250,000 to $600,000 in his pension and Social Security benefits after his disappearance.
  • Investigators stress limits in the original probe — no missing‑person report was filed, no usable fingerprints existed and physical evidence is decades old — and officials have not publicly disclosed the specific evidence linking Beall to the killing as the inquiry continues.
  • Sipfle’s family said they are relieved by the identification and thanked the sheriff’s cold‑case unit and the forensic labs, and the sheriff’s department says the case shows how genetic genealogy can help resolve other long‑cold investigations.